Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5102b34a10cd33c…

MALICIOUS

PDF

56.5 KB Authoring application: Nitro PDF
MD5: 56db02300acb10d28f3f7c730e04d3fd SHA-1: 70c43f9ae5a24e5b8fa944bc7e97f56e68e36fd0 SHA-256: d5102b34a10cd33c3b6976e23fef965372cf51e1bf730af4cd7392f5b8c7ecb7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This behavior is indicative of a link farm or SEO poisoning attack, designed to drive traffic to malicious content or phishing sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection motive. No scripts were extracted from this sample.

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://motionzone.org/uploads/1/3/0/2/130289521/473a3c1ae5.pdf
    • http://aclassta.com.au/uploads/1/3/0/6/130604550/194395df6.pdf
    • http://patchezplus.com/uploads/1/3/0/6/130639810/jexadegalepe.pdf
    • http://sensuoustaste.com/uploads/1/3/0/5/130538986/0a5b15e4d.pdf
    • http://mega-fb.com/uploads/2020/01/28/powalivotula-wesivotuvid-mofevuzurekozek.pdf
    • http://routt4hscholarship.com/uploads/1/3/0/4/130435500/5007934.pdf
    • http://callihanenglish.com/uploads/1/3/0/4/130488371/5262822.pdf
    • http://purposeisbaeshop.com/uploads/1/3/0/4/130435783/3344566.pdf
    • http://us.momotombochocolatefactory.com/uploads/1/3/0/2/130287463/130287463.html#what+is+a+seizure+disorder+definition

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013c9.bin
db25f5bfee44c7a2d7d87dc4f1c67c3f44cf11513bbccd6cf0c896101cbd25cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C9 8628 bytes

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